Well 980 is overkill anyway, even if i had the cash its just insane going for it. A 2x8 PIN card, i wonder how people can sustain their claim for much higher efficiency when a card is having a connection that is basically good to go for 300 W, not any less than a 290X. But i could go on waiting forever... i need new card today not in countless months. I compare 290X with 970 because its almost same priced... it would be unfair comparing it with a much more pricy 980.
Checking efficiency matters, the Nvidia cards use connections that are able to pump twice the power than they actually use (980: 300W on a 175W card*, 970: 225 W on a 150W card), its just weird. Although temperature threshold wont allow for a GPU twice that strong, maybe +30% and Nvidia is surely hiding it in order to attack AMD. Guess its to much fake really... Nvidia was probably not releasing the true high end and is just waiting for it to be released in some months. The overpowered connectors are here so a consumer got in mind that they actually own a flagship... oh well, i guess i know the game.
*290X is a 250W or so card, roughly ~40% less effective, probably ~30% vs. 970. Its much less efficiency but nothing that cant be beaten for a new generation. GTX 960 is clearly a junk piece with lowest efficiency of entire 900 series so far (probably just ~10% more effective than 290X), dunno why such a bad design for lower midrange users that are in need of efficiency.